Question

The magnetic susceptibility of a paramagnetic material at -73 ${}^{\circ }$C is 0.0075 and its value at - 173 ${}^{\circ }$ C will be

• A. 0.015
• B. 0.0045
• C. 0.0075
• D. 0.0030

Answer 1

The correct option is A

0.015

$\chi \propto \frac{1}{T}\frac{{\chi }_2}{{\chi }_1}=\frac{T_1}{T_2}\frac{{\chi }_2}{0.0075}=\frac{273-73}{273-173}\frac{{\chi }_2}{0.0075}=\frac{200}{100}{\chi }_2=0.0150$